Reproduction Flashcards
What’s polyandry ?
Form of polygamy in which a woman takes two or more husbands at the same time. Polyandry is contrasted with polygyny, involving one male and two or more females.
What’s polygyny ?
Mating system in which one male lives and mates with multiple females but each female only mates with a single male.
What’s being monogamous ?
Mating system where one male and one female form an exclusive social pair bond for a period of time, often until their offspring are weaned or fledged. This behavior is associated with partner preference, affiliative behaviors, and shared parental responsibilities in certain mammalian species.
What’s being polygynandrous ?
Polygynandry is a form of polygamy; in sexually reproducing animals, it is a multi-male and multi-female mating system. Polygynandry encapsulates both polygyny (males having multiple female mates) and polyandry (females having multiple male mates) within the same species.
What’s the concept of explosive breeding assemblage ?
Explosive breeding assemblages refer to a unique reproductive strategy observed in certain animal species, where a large number of individuals gather in a specific area for a short period of time to mate and reproduce.
What’s a lek ? lekking ?
Spatially and temporally clustered aggregations of males in sites where display, mate choice, and copulation take place.
What’s a reproductive skew ?
Unequal partitioning of reproduction by same-sex members of a social group.
What’s heterozygosity ?
Probability that two alleles from one individual and at one locus (all randomly drawn) in a population (or subsample) are different.
What’s the inbreeding avoidance theory ?
Certain mechanisms develop within a species, or within a given population of a species, as a result of assortative mating and natural and sexual selection, in order to prevent breeding among related individuals.
What’s the sexy son hypothesis ?
If females choose physically attractive males, they will tend to get physically attractive sons, and, thus more grandchildren, because other choosy females will prefer their attractive, sexy sons.
What’s a nuptial gift ?
Gifts that male animals transfer to females during courtship and mating, beyond the obligatory gametes.
What’s Bateman’s principle ?
In most species, variability in reproductive success (or reproductive variance) is greater in males than in females.
What’s operational sex ratio ?
the ratio of sexually receptive males to receptive females is a main predictor of the intensity and direction of mating competition
What’s an extrapair copulation ?
Mating behaviour in monogamous species. Monogamy is the practice of having only one sexual partner at any one time, forming a long-term bond and combining efforts to raise offspring together; mating outside this pairing is extra-pair copulation.
What’s promiscuity ?
Promiscuity is frequently used to describe animal mating behaviour, and especially to describe multiple mating by females.
